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SCHOOL COMMUNITY·WAHLUKE SCHOOL DISTRICT·NCES 530936002787

Sentinel Tech Alt School

20140 Rd 24 SW, Mattawa, WA 99349 · (509) 932-4565 · Grant County
GRADES 06–12HIGH42-RURALTITLE IALTERNATIVE EDUCATION SCHOOL36 STUDENTS
Enrollment
36
High
DISTRICT 393 · STATE 573
Student : Teacher
36.0:1
1 FTE teachers
DISTRICT 28.1:1 · STATE 21.6:1
Free / Reduced Lunch
92%
33 students
DISTRICT 86% · STATE 51%
Community
0
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade
Grade 8
1
Grade 9
1
Grade 10
3
Grade 11
13
Grade 12
18
Student demographics
White
13%
DISTRICT 1% · STATE 47%
Hispanic
3597%
DISTRICT 98% · STATE 27%
Student head counts by race/ethnicity from federal NCES enrollment data. Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
2364%
Female
1336%

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BeatsExpectations

Not computed for this school
BeatsExpectations is not computed for specialized-population schools (schools for the deaf or blind, therapeutic and behavioral-health placements, juvenile-justice and alternative-education settings, and similar). State ELA/Math proficiency rates are not a comparable metric for these populations, so a demographically-adjusted residual against general-enrollment peers would be misleading. About the methodology →

7-year change

SY 2017-18 vs SY 2024-25
Enrollment
36
+11 (+44%) vs 2017
Student : Teacher
36.0:1
was 26.0:1
% White
3%
was 0%
% Hispanic
97%
was 96%
% Black
0%
was 0%
% Asian
0%
was 0%
Source: NCES Common Core of Data

About Sentinel Tech Alt School

Sentinel Tech Alt School operates as a very small senior high in Mattawa, Washington, part of Wahluke School District. Current enrollment sits at 36 students spanning grades 6 through 12. By comparison, Washington's public schools average about 573 students each, so Sentinel Tech Alt School sits 94% below that benchmark.

Across the 8 schools in Wahluke School District (2,455 students total), Sentinel Tech Alt School accounts for its share of the district's footprint.

In terms of who attends, Sentinel Tech Alt School lists that nearly all students (97%) are Hispanic; the rest is composed of 3% White. The wider county runs roughly 44% Hispanic, putting the school's mix considerably more Hispanic than the area baseline.

Looking at school resources, The school employs 1 full-time-equivalent teachers, for a student-teacher ratio near 36.0:1. That figure is higher than the state norm's 21.6:1 average. An estimated 92% of students are eligible for free or reduced-price lunch, often used as a Title I proxy. Set against Grant County (around 69%), the school's rate is noticeably above typical.

Across the wider county, Grant County reports that the typical household earns roughly $73,267 per year, 18% of adults hold a bachelor's degree or higher, and the poverty rate sits near 12%. In all, Grant County runs 61 public schools (combined enrollment of about 20,494 students), of which Sentinel Tech Alt School is one.

Nearest neighbor: Saddle Mountain Elementary, around 1.1 miles off. Within five miles, there are 7 other public schools.

Sentinel Tech Alt School operates from a countryside location.

Over the past 7-year window. Looking back 7 years, enrollment at Sentinel Tech Alt School has increased 44%, going from 25 students in 2018 to 36 in 2025. The student-to-teacher ratio loosened from 26.0:1 in 2018 to 36.0:1 today.

In the discussion threads here, recent activity here tends to focus on fundraisers, lost-and-found posts, and report-card season. Contributors range from current parents to recent graduates and teachers.

Grant County at a glance

View full county profile
Population
101,799
Census ACS
Median income
$73,267
Household, ACS
Bachelor's+
18%
Adults 25+
Poverty rate
12%
Below federal line
Schools in county
61
20,494 students

Quick facts

School name
Sentinel Tech Alt School
District
Wahluke School District
Address
20140 Rd 24 SW, Mattawa, WA 99349
Phone
(509) 932-4565
County
Grant County
Level
High
Grade range
06–12
Total enrollment
36
Teachers (FTE)
1
Student–teacher ratio
36.0:1
Free/Reduced lunch
33 (92%)
Locale
42-Rural: Distant
NCES ID
530936002787
Charter school
No
Virtual school
No

Related schools

Other schools in Wahluke School District
Other schools in Mattawa
Nearby schools

Frequently asked questions

About Sentinel Tech Alt School
How large is Sentinel Tech Alt School?
Sentinel Tech Alt School enrolls approximately 36 students in grades 06-12.
What age range does Sentinel Tech Alt School serve?
Sentinel Tech Alt School serves students from grade 06 through grade 12.
How many students per teacher at Sentinel Tech Alt School?
Approximately 36.0:1 students per teacher at Sentinel Tech Alt School.
How diverse is Sentinel Tech Alt School?
Sentinel Tech Alt School reports a student body of 3% White, 97% Hispanic.
Who oversees Sentinel Tech Alt School?
Sentinel Tech Alt School is overseen by Wahluke School District in Grant County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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